Key Specifications&sol;Special Features&colon; · Features&colon; With remote controller&comma; apply for prisons&comma; detention centers&comma; labor camps and moreOther places need a long time uninterrupted work&comma; is the classic model used in detention centersAnd prisons at home and abroad&comma; there are millions of VIP101B-6&lpar;1&rpar; jammer was sold in various kinds of security places at home and abroad